very low fps

Hi, did you observe the issue in other places than village like nether or end? Or the issue only affects villages?

Please provide your device model and OS. 

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Model: Multilaser ms60f plus

OS: Android 7.0

they are only in the villages. although the FPS is still very low in general

Só as vilas estão com baixo FPS.

the villages are still crashing a lot

Have you tried following any of the tips mentioned here? In the article there is also some more information about what the culprit of the crashes can be. Please make sure your device is suitable to run Minecraft, try to reduce render distance etc.